April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 6 » London becomes the world's first city to host licensed taxicabs.
December 30 » The British Colony of Natal annexes Zululand.
Day of death April 18, 1962
The temperature on April 18, 1962 was between 6.4 °C and 21.3 °C and averaged 12.8 °C. There was 2.6 hours of sunshine (18%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
March 16 » A Flying Tiger Line Super Constellation disappears in the western Pacific Ocean, with all 107 aboard missing and presumed dead.
May 19 » A birthday salute to U.S. President John F. Kennedy takes place at Madison Square Garden, New York City. The highlight is Marilyn Monroe's rendition of "Happy Birthday".
June 1 » Adolf Eichmann is hanged in Israel.
July 6 » As a part of Operation Plowshare, the Sedan nuclear test takes place.
October 13 » The Pacific Northwest experiences a cyclone the equal of a Cat 3 hurricane, with winds above 150mph. 46 people die.
December 25 » The Soviet Union conducts its final above-ground nuclear weapon test, in anticipation of the 1963 Partial Nuclear Test Ban Treaty.
When copying data from this family tree, please include a reference to the origin: W. Rovers, "Family tree Ro(o)vers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_rovers/I22552.php : accessed February 15, 2026), "Johanna Elisabeth Roovers (1897-1962)".
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